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#!/usr/bin/env python3
# require-dco.py: validate all commits are signed off
#
# Copyright (C) 2020 Red Hat, Inc.
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library. If not, see
# <http://www.gnu.org/licenses/>.
import os
import os.path
import sys
import subprocess
cwd = os.getcwd()
reponame = os.path.basename(cwd)
repourl = "https://gitlab.com/virt-viewer/%s.git" % reponame
subprocess.check_call(["git", "remote", "add", "dcocheck", repourl])
subprocess.check_call(["git", "fetch", "dcocheck", "master"],
stdout=subprocess.DEVNULL,
stderr=subprocess.DEVNULL)
ancestor = subprocess.check_output(["git", "merge-base", "dcocheck/master", "HEAD"],
universal_newlines=True)
ancestor = ancestor.strip()
subprocess.check_call(["git", "remote", "rm", "dcocheck"])
errors = False
print("\nChecking for 'Signed-off-by: NAME <EMAIL>' on all commits since %s...\n" % ancestor)
log = subprocess.check_output(["git", "log", "--format=%H %s", ancestor + "..."],
universal_newlines=True)
if log == "":
commits = []
else:
commits = [[c[0:40], c[41:]] for c in log.strip().split("\n")]
for sha, subject in commits:
msg = subprocess.check_output(["git", "show", "-s", sha],
universal_newlines=True)
lines = msg.strip().split("\n")
print("🔍 %s %s" % (sha, subject))
sob = False
for line in lines:
if "Signed-off-by:" in line:
sob = True
if "localhost" in line:
print(" ❌ FAIL: bad email in %s" % line)
errors = True
if not sob:
print(" ❌ FAIL missing Signed-off-by tag")
errors = True
if errors:
print("""
❌ ERROR: One or more commits are missing a valid Signed-off-By tag.
This project requires all contributors to assert that their contributions
are provided in compliance with the terms of the Developer's Certificate
of Origin 1.1 (DCO):
https://developercertificate.org/
To indicate acceptance of the DCO every commit must have a tag
Signed-off-by: REAL NAME <EMAIL>
This can be achieved by passing the "-s" flag to the "git commit" command.
To bulk update all commits on current branch "git rebase" can be used:
git rebase -i master -x 'git commit --amend --no-edit -s'
""")
sys.exit(1)
sys.exit(0)
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